Model: 501C33-13

Externally Relieved Body Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.313 inches

Fastener Length

Between 0.859 inches and 0.891 inches

Head Style

Knurled no. 1

Head Diameter

Between 0.495 inches and 0.500 inches

Head Height

Between 0.546 inches and 0.578 inches

Point Length

0.188 inches

Point Diameter

Between 0.159 inches and 0.175 inches

First Diameter From Head

Between 0.170 inches and 0.180 inches

Distance From Largest Bearing Surface Of Head To End Of First Diameter

Between 0.364 inches and 0.384 inches

Point Style

Cone

Internal Drive Style

Slot

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Externally Relieved Body Diameter Quantity

Point Chamfer Angle

Between 85.0 degrees and 95.0 degrees

Material

Steel comp 203ez or steel comp 303 or steel comp 303 plus x or steel comp 303cu or steel comp 303ma or steel comp 303pb or steel comp 303se or steel comp 416 or steel comp 416 plus x or steel comp 416se or steel comp 430f or steel comp 430fse

Material Specification

Mil-w-52263 military specification all material responses

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Thread Series Designator

Unc

NSN

5305-01-291-0138

Part Number

501C33-13

Description

Screw,externally Relieved Body

CAGE

94033

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

Part 501C33-13 NSN 5305-01-291-0138

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01852

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment